We use nfs backed instances a lot, and this problem normally has to do with wrong permission management in your filer and/or client. <div><br></div><div>Check if not only root can write on the nfs share (specially libvirt user).</div>
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<br><br><div class="gmail_quote">On Tue, Apr 3, 2012 at 6:43 PM, Mandar Vaze / मंदार वझे <span dir="ltr"><<a href="mailto:mandarvaze@gmail.com">mandarvaze@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="gmail_quote">I saw an old question posted here :<br>
<a href="https://answers.launchpad.net/nova/+question/164689" target="_blank">https://answers.launchpad.net/nova/+question/164689</a><br>
<br>
But I am not trying live migration.<br>
<br>
I have nfs mounted instances_path - so when I try to spawn an instance I<br>
run into the above errors. Especially following :<br>
<br>
File "/usr/lib/python2.7/dist-packages/libvirt.py", line 372, in createWithFlags<br>
40842 2012-04-03 05:42:27 TRACE nova.rpc.amqp if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)<br>
40843 2012-04-03 05:42:27 TRACE nova.rpc.amqp libvirtError: internal error Process exited while reading console log output: chardev: opening backend "file" failed<br>
<br>
But as you can see below, several files are created in this folder, so I<br>
am not sure if mine if permissions issue (Else none of the files would<br>
get created) The problem is reported when libvirt tries to write to<br>
console.log (File itself is created with correct permissions - just that<br>
this is zero byte file)<br>
<br>
mandar@ubuntu-dev-mandar:/nfs_shared_instances_path/instance-00000005$ ll<br>
total 10944<br>
drwxrwxr-x 2 mandar libvirtd 4096 2012-04-03 05:42 ./<br>
drwxrwxrwx 4 root root 4096 2012-04-03 05:42 ../<br>
-rw-rw---- 1 mandar libvirtd 0 2012-04-03 05:42 console.log<br>
-rw-r--r-- 1 mandar libvirtd 6291968 2012-04-03 05:42 disk<br>
-rw-rw-r-- 1 mandar libvirtd 4731440 2012-04-03 05:42 kernel<br>
-rw-rw-r-- 1 mandar libvirtd 1067 2012-04-03 05:42 libvirt.xml<br>
-rw-rw-r-- 1 mandar libvirtd 2254249 2012-04-03 05:42 ramdisk<br>
<br>I'm suspecting : <a href="https://bugs.launchpad.net/ubuntu/maverick/+source/libvirt/+bug/632696" target="_blank">https://bugs.launchpad.net/ubuntu/maverick/+source/libvirt/+bug/632696</a><br>
But I the above doesn't show itself in non-NFS setup<font color="#888888"><br></font></div><div class="gmail_quote"><br></div><div class="gmail_quote">Please suggest !!!</div><span class="HOEnZb"><font color="#888888"><div class="gmail_quote">
<br></div><div class="gmail_quote">
-Mandar</div><div class="gmail_quote"><br></div>
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